| (19) |
 |
|
(11) |
EP 1 160 387 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
03.12.2003 Bulletin 2003/49 |
| (43) |
Date of publication A2: |
|
05.12.2001 Bulletin 2001/49 |
| (22) |
Date of filing: 16.05.2001 |
|
| (51) |
International Patent Classification (IPC)7: E04B 1/82 |
|
| (84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
Designated Extension States: |
|
AL LT LV MK RO SI |
| (30) |
Priority: |
30.05.2000 US 580692
|
| (71) |
Applicant: Armstrong World Industries, Inc. |
|
Lancaster Pennsylvania 17603 (US) |
|
| (72) |
Inventors: |
|
- Belmares, Hector
Lancaster, Pennsylvania 17603 (US)
- Caldwell, Kenneth G.
Mountville, Pennsylvania 17554 (US)
|
| (74) |
Representative: Finck, Dieter, Dr.Ing. et al |
|
v. Füner Ebbinghaus Finck Hano Mariahilfplatz 2 - 3
81541 München
81541 München (DE) |
|
| |
|
| (54) |
A scratch resistant discontinuous acoustical surface coating |
(57) The present invention provides for both a composition and method for producing a
scratch resistant coating applied to an acoustical panel. The coating primarily comprises
binder, filler and mica and is typically applied as a spray. The coating can be characterized
as a discontinuous film, whereby sound can pass through the coating to the panel for
attenuating sound. The coating is thus enabled to provide a finish and color without
compromising the acoustical performance of the substrate. The process primarily comprises
combining and mixing the dry components of filler, binder and mica and then combining
the same with water and mixing to create an aqueous mix that can be applied to the
acoustical panel and dried.